Warren Buffett's Successor, Greg Abel, Just Sold Over 50% of Berkshire Hathaway's Stake in Nucor and Piled Into an Artificial Intelligence (AI) Stock That Billionaire Investor Bill Ackman Just Exited
Berkshire Hathaway, led by CEO Greg Abel, sold over 50% of its stake in Nucor (NUE) and increased its investment in Alphabet (GOOG, GOOGL) by $17 billion in Q2. Nucor's stock has risen 62% in 2026, while Alphabet is up 150% over five years. Bill Ackman's hedge fund exited Alphabet, citing valuation and capital allocation.
How this was made

The 30-second read
Why it matters
The disclosed trades represent the first public disclosure of these positions, offering fresh data for portfolio managers.
Market read
Large institutional reallocation signals potential sector shifts in steel and AI‑focused technology.
What to watch
Bill Ackman's recent exit from Alphabet may temper enthusiasm despite Berkshire's purchase.
Background
The article summarizes Berkshire Hathaway's Q2 13F filing, highlighting major portfolio changes in Nucor and Alphabet.
Ticker impact
Berkshire sold over 50% of its stake in Nucor in Q2, disclosed in the latest 13F filing.
Short-term dip expected; long-term outlook unchanged.
The sizable sell-off by Berkshire signals reduced conviction, likely prompting short-term sell pressure.
Berkshire increased its Alphabet position with a $7 billion open‑market purchase in Q2, disclosed in the 13F.
Potential modest upside as the market views the purchase as a vote of confidence.
A major investor adding billions signals confidence in AI‑driven growth, likely buoying sentiment.
Market effects
AI‑related tech stocks may see broader interest as Berkshire adds to Alphabet.
U.S. equity markets may experience slight uplift in large‑cap tech indices.
Limited to investors tracking major institutional moves.
Counterpoint
Berkshire's exit from Nucor could be a signal of overvaluation in steel, suggesting a broader sector rotation.
Key entities
- Institutional InvestorBerkshire Hathaway
Holding company led by Greg Abel.
- ExecutiveGreg Abel
CEO of Berkshire Hathaway and successor to Warren Buffett.


